For each of the 20 composers of classical music, the table gives the

Question

For each of the 20 composers of classical music, the table gives the year of birth, the year of death, and the number of live performances of the composer’s works in 2010.
    Composer    Year of birth    Year of death    Number of performances     Bach  1685  1750  1388    Beethoven  1770  1827  2859    Brainns  1833  1897  1848    Chopin  1810  1849  748    Dvorak  1841  1904  1071  
  Handel   1685  1759  757    Haydn   1732  1809  989    Mendelssohn   1809  1847  865    Mozart  1756  1791  3035    Prokofiev  1891  1953  931    Puccini  1858  1924  723    Raclunaninov  1873  1943  673    Ravel  1875  1937  864    Schubert  1797  1828  1023    Schumann  1810  1856  1460    Shostakovich  1906  1975  779    Strauss  1864  1949  720    Stravinsky  1882  1971  849    Tchaikovsky  1840  1893  2295    Verdi  1813  1901  845    Total  -  -  24722     ( Sort ↕  the table by clicking on the headers)

For each of the following statements about the composers listed in the table, select Yes if the statement accurately reflects the information in the table. Otherwise, select No.

mSKR · Answer

1. Died in 1700s = 3
Bach,handel,Mozart
=1388+757+3035= 5180

5180/24722=~ 
5 times of 5180-= 25900
which is less than = Total 24722
less than 1/5th (20%)

YES

2. 
Proko = 931
Puccini = 723
Rach = 673
ravel = 864
strauss = 720
stran= 849
verdi= 845

YES

3. Died least reccently= bach(1388)
Died most recently= shasta(779)
779*2= 1558 
1388(less than twice)

NO

Apt0810 · Answer

1)Yes,Death in 1700: Bach,Handel,Mozart
1388+757+3035=5180
Total performances =24722
Now 1/5 of total=4944.4

So yes 5180>4944.4

2)Yes,Composers who lived in both 1800&1900 are:

Prokofiev=931(performance)
Dvorak=1071
Puccini=723
Rachminov=673
Ravel=864
Strauss=720
Stravinsky=849
Verdi=845
So yes here out of 8 only 7 had performance fewer than 1000 times

3)No,Died least recently is Bach(1750) has 1388 performances
Died most recently is Shostakovich(1975) has 779 performances

And 779*2=1588,but Bach performed only 1388 times <1588

Posted from my mobile device

Rohi02 · Answer

1) Bach+ Handel+Mozart = 1388+757+3035 = 5180
Total performace = 24722
quick check- 5*5= 25 so the total performance needs to be <=25. Ans- Yes

2) Proko- 931
Puccini- 723
Rach- 673
Ravel- 864
Strauss- 779
Stravin- 849
Verdi- 845
Therefore, exactly 7 composers. Ans- Yes

3) Bach- 1388 (Died in 1750, least recent in comparison to others)
Shosta- 779 (Died in 1975, most recent in comparison to others)
779*2 = 1558 which is more than number of performance by Bach (1338). Ans- No

Ekland · Answer

Question33of250
IR14200.01

For each of 20 composers, the table lists the year of birth, the year of death, and the number of performances in 2010 of works written by that composer.

Sort By: Year of birth
Composer Year of birth Year of death Number of performances
Handel 1685 1759 757
Bach 1685 1750 1,388
Haydn 1732 1809 989
Mozart 1756 1791 3,035
Beethoven 1770 1827 2,859
Schubert 1797 1828 1,023
Mendelssohn 1809 1847 865
Chopin 1810 1849 748
Schumann 1810 1856 1,460
Verdi 1813 1901 845
Brahms 1833 1897 1,848
Tchaikovsky 1840 1893 2,295
Dvořák 1841 1904 1,071
Puccini 1858 1924 723
Strauss 1864 1949 720
Rachmaninov 1873 1943 673
Ravel 1875 1937 864
Stravinsky 1882 1971 849
Prokofiev 1891 1953 931
Shostakovich 1906 1975 779
 Total  — —   24,722

For each of the following statements, select Yes if the statement accurately reflects the information in the table; otherwise select No.

A . Composers born in the 1700s accounted for less than a third of the total performances.

OFFICIAL ANSWER IS YES but if you do the calculation with the calculator the answer should be NO

a snippet of the solution by GMAC is attached next.
The experts kindly help explain. Is it me or does GMAT make errors? never observed one before.

Ekland · Answer

a quick use of the calculator provided by GMAC shows clearly that 7906 divided by 24722 gives you 0.319 which is NOT less than 30% but actually exactly  31% .

Am i missing a new instruction or new math style in the GMAT?  Bunuel   chetan2u  kindly advice.

Sajjad1994 · Answer

Official Explanation

RO1

Sorting the table by Year of death shows that 3 composers died in the 1700s: Bach, Handel, and Mozart. The sum of the number of performances for these composers (1,388+757+3,035) is 5,180. Dividing this sum by the total number of performances (24,722) yields 0.20953, showing that performances of these 3 composers’ work accounted for more than 20% of the total, or more than one-fifth.

The correct answer is Yes.

RO2

To have lived in both the 1800s and the 1900s, a composer would need to have been born prior to 1900 and to have died after 1899. Sorting the table by Year of birth shows that 1 composer, Shostakovich, was born after 1900. Sorting again by Year of death shows that 11 composers died before 1899. That leaves 8 composers (20−1−11=8) who lived in both the 1800s and the 1900s. Only 1 of these, Dvořák, had his work performed 1,000 or more times; the other 7 had their work performed fewer than 1,000 times.

The correct answer is Yes.

RO3

Sorting the table by Year of death shows that Bach died least recently, in 1750, and Shostakovich died most recently, in 1975. Bach’s works were performed 1,388 times, and Shostakovich’s were performed 779 times. Two times 779 is 1,558, and 1,388 is not greater than 1,558. Thus, Bach’s works were not performed more than twice as often as Shostakovich’s.

The correct answer is No.

TargetMBA007 · Answer

Would love some suggestions on how do you manage time on a question like. I got this right, but spent almost 5 minutes.

Would you use the calculator straight away? how do you decide before doing an approximation, whether it would work here or not, as after approximating, I found the numbers were quite close, and hence had to go back to the calculator.

KarishmaB

Kmohan1 · Answer

Statement 1: After sorting the table 
Bach 1388
Handel 757
Mozart 3035
Total of 5180. The total for all 24722, 1/5 of 24722 is ~ <5000 so yes these composers account for more than 1/5 of the total number of performances.
So Yes
Statement 2: After sorting the table, only Dvorak has greater than 1000 performances.
Stravinsky 849
Prokofiev 931
Strauss 720
Raclunaninov 673
Ravel 864
Puccini 723
Dvorak 1071- not part of the subset required by the question
Verdi 845
So Yes.
Statement 3: After sorting Bach died the least recently with 1705 as the year of death. The number of performance is 1388. Shostakovich died recently in 1975. The number of performances is 779. 
1388 is not more than twice 779.
So No

KRNSW · Answer

For Q2, why have we not considered Dvorak? He too lived in 1800s and 1900s, making the answer no, since no. of performances of his work exceed 1,000.

Gmat860sanskar · Answer

I think you may have missed Verdi or some other folk, because I can see & count there are exactly 7 fellows who lived in both 1800's and 1900's and have less than 1000 performance

Yes	No
		Performances of works by composers who died in the 1700s accounted for more than one fifth of the total number of performances.
		Exactly 7 of the composers who lived both in the 1800s and the 1900s had their works performed fewer than 1,000 times.
		The works of the composer who died least recently were performed more than twice as often as the works of the composer who died most recently.

For each of the 20 composers of classical music, the table gives the

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Composer	Year of birth	Year of death	Number of performances
Bach	1685	1750	1388
Beethoven	1770	1827	2859
Brainns	1833	1897	1848
Chopin	1810	1849	748
Dvorak	1841	1904	1071
Handel	1685	1759	757
Haydn	1732	1809	989
Mendelssohn	1809	1847	865
Mozart	1756	1791	3035
Prokofiev	1891	1953	931
Puccini	1858	1924	723
Raclunaninov	1873	1943	673
Ravel	1875	1937	864
Schubert	1797	1828	1023
Schumann	1810	1856	1460
Shostakovich	1906	1975	779
Strauss	1864	1949	720
Stravinsky	1882	1971	849
Tchaikovsky	1840	1893	2295
Verdi	1813	1901	845
Total	-	-	24722

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For each of the 20 composers of classical music, the table gives the

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